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TDE / LOB performance issue

edited Sep 23, 2019 5:37AM in Database Security Products (MOSC) 6 commentsAnswered

Hi all !

After running TDE almost 3 years now we're getting performance issues related to LOB's.

The app is moving records (including a BLOB' column) to a "history" table , i.e insert into hist_tablename1 (select * from tablename1 where ...)


From taking a few sec we're now reaching several minutes in exec time.

After running diff. perf/tuning tools (AWR etc) without finding any extraordinary we're puzzled what's causing the delays.

Running the same code on the standby/cloned db the exec times are normal so we suspect it's the load on the server ...

Our theory/question is:

Can TDE cause contention caused by large amounts of encrypt/decrypt activities !?

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